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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Days which have increasing daylight hours

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2. 2 month growth cycle. stored in the epididymis of the bull






3. Not under a timeline - cow can not be sold as steak






4. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






5. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






6. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






7. 30 hours after estrus begins






8. Front feet and head first. (except for hogs and dogs)






9. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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10. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






11. Look for infection - split - and rupture of the penis






12. Urinary calculi.






13. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






14. 336 days






15. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






16. 2 month growth cycle. stored in the epididymis of the bull






17. 1-3 days






18. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






19. 336 days






20. Animal which has been castrated after puberty






21. Way to know everything is alright with the breeding male






22. 45-60 days after breeding; re-breed as required






23. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






24. 14-19 (17) days






25. 265-285 days






26. (LH) stimulates the Leydig cells to produce testosterone






27. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






28. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






29. Scar tissue plugs up chambers of udder






30. 114 days






31. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






32. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






33. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






34. 16-20 hours






35. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






36. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






37. Why does estrus happen before ovulation?






38. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






39. Days which have decreasing daylight hours

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40. Milk is 15% ________ and 85% __________.






41. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






42. What helps regulate spermatogenesis?






43. (male) pushes the testes outward toward the legs for a cool-down off of the body






44. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






45. 19-23 (21) days






46. What about the sperm for a bull which has been castrated but still has testicles?






47. FEED






48. Provide nourishment for the developing sperm






49. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






50. 19-23 (21) days